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[media] c-qcam: convert to the latest frameworks 

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-05-08 15:20:21 -03:00 committed by Mauro Carvalho Chehab
parent 5fa1a89d37
commit 34caed8b3a
1 changed files with 65 additions and 72 deletions
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137
drivers/media/video/c-qcam.c
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@ -40,10 +40,14 @@
#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
struct qcam {
struct v4l2_device v4l2_dev;
struct video_device vdev;
struct v4l2_ctrl_handler hdl;
struct pardevice *pdev;
struct parport *pport;
int width, height;
@ -515,7 +519,8 @@ static int qcam_querycap(struct file *file, void *priv,
strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver));
strlcpy(vcap->card, "Color Quickcam", sizeof(vcap->card));
strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
@ -543,73 +548,6 @@ static int qcam_s_input(struct file *file, void *fh, unsigned int inp)
return (inp > 0) ? -EINVAL : 0;
}
static int qcam_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *qc)
{
switch (qc->id) {
case V4L2_CID_BRIGHTNESS:
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 240);
case V4L2_CID_CONTRAST:
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 192);
case V4L2_CID_GAMMA:
return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
}
return -EINVAL;
}
static int qcam_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct qcam *qcam = video_drvdata(file);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ctrl->value = qcam->brightness;
break;
case V4L2_CID_CONTRAST:
ctrl->value = qcam->contrast;
break;
case V4L2_CID_GAMMA:
ctrl->value = qcam->whitebal;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int qcam_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct qcam *qcam = video_drvdata(file);
int ret = 0;
mutex_lock(&qcam->lock);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
qcam->brightness = ctrl->value;
break;
case V4L2_CID_CONTRAST:
qcam->contrast = ctrl->value;
break;
case V4L2_CID_GAMMA:
qcam->whitebal = ctrl->value;
break;
default:
ret = -EINVAL;
break;
}
if (ret == 0) {
parport_claim_or_block(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
}
mutex_unlock(&qcam->lock);
return ret;
}
static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
{
struct qcam *qcam = video_drvdata(file);
@ -713,8 +651,41 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
return len;
}
static int qcam_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct qcam *qcam =
container_of(ctrl->handler, struct qcam, hdl);
int ret = 0;
mutex_lock(&qcam->lock);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
qcam->brightness = ctrl->val;
break;
case V4L2_CID_CONTRAST:
qcam->contrast = ctrl->val;
break;
case V4L2_CID_GAMMA:
qcam->whitebal = ctrl->val;
break;
default:
ret = -EINVAL;
break;
}
if (ret == 0) {
parport_claim_or_block(qcam->pdev);
qc_setup(qcam);
parport_release(qcam->pdev);
}
mutex_unlock(&qcam->lock);
return ret;
}
static const struct v4l2_file_operations qcam_fops = {
.owner = THIS_MODULE,
.open = v4l2_fh_open,
.release = v4l2_fh_release,
.poll = v4l2_ctrl_poll,
.unlocked_ioctl = video_ioctl2,
.read = qcam_read,
};
@ -724,13 +695,17 @@ static const struct v4l2_ioctl_ops qcam_ioctl_ops = {
.vidioc_g_input = qcam_g_input,
.vidioc_s_input = qcam_s_input,
.vidioc_enum_input = qcam_enum_input,
.vidioc_queryctrl = qcam_queryctrl,
.vidioc_g_ctrl = qcam_g_ctrl,
.vidioc_s_ctrl = qcam_s_ctrl,
.vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
.vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = qcam_g_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = qcam_s_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = qcam_try_fmt_vid_cap,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static const struct v4l2_ctrl_ops qcam_ctrl_ops = {
.s_ctrl = qcam_s_ctrl,
};
/* Initialize the QuickCam driver control structure. */
@ -753,6 +728,20 @@ static struct qcam *qcam_init(struct parport *port)
return NULL;
}
v4l2_ctrl_handler_init(&qcam->hdl, 3);
v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 255, 1, 240);
v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
V4L2_CID_CONTRAST, 0, 255, 1, 192);
v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
V4L2_CID_GAMMA, 0, 255, 1, 128);
if (qcam->hdl.error) {
v4l2_err(v4l2_dev, "couldn't register controls\n");
v4l2_ctrl_handler_free(&qcam->hdl);
kfree(qcam);
return NULL;
}
qcam->pport = port;
qcam->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
NULL, 0, NULL);
@ -761,6 +750,7 @@ static struct qcam *qcam_init(struct parport *port)
if (qcam->pdev == NULL) {
v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
v4l2_ctrl_handler_free(&qcam->hdl);
kfree(qcam);
return NULL;
}
@ -770,6 +760,8 @@ static struct qcam *qcam_init(struct parport *port)
qcam->vdev.fops = &qcam_fops;
qcam->vdev.ioctl_ops = &qcam_ioctl_ops;
qcam->vdev.release = video_device_release_empty;
qcam->vdev.ctrl_handler = &qcam->hdl;
set_bit(V4L2_FL_USE_FH_PRIO, &qcam->vdev.flags);
video_set_drvdata(&qcam->vdev, qcam);
mutex_init(&qcam->lock);
@ -844,6 +836,7 @@ static int init_cqcam(struct parport *port)
static void close_cqcam(struct qcam *qcam)
{
video_unregister_device(&qcam->vdev);
v4l2_ctrl_handler_free(&qcam->hdl);
parport_unregister_device(qcam->pdev);
kfree(qcam);
}